That is precisely what we are doing." The National Center on Education and the Economy will be working with eight states on a project to test board examination systems.

VOA: special.2010.02.25

And to do that, we need a lot of surveys and geological surveys on water preservation systems.

VOA: standard.2009.10.06

"We must keep in mind how even apparently unsuccessful attacks on Western mass transportation systems can bring major cities to a halt, cost the enemy billions and send his corporations into bankruptcy."

VOA: standard.2010.04.01

"Someone could attack the industrial control systems that control all the valves, all the distribution systems, and are used to turn on and off various aspects involved with energy and the electrical power grid and oil and gas distribution networks,".

VOA: standard.2009.08.11

They found the highest levels of solar activity cause small, but far-reaching effects on weather systems around the world.

VOA: special.2009.09.29

They say these slaughterhouses on wheels are not only a way to build local food systems, but also to help local economies.

VOA: special.2010.08.03

So everything from creating solar hot-water systems on our rooftops to making our buildings much more energy efficient."

VOA: special.2011.07.08

Lawmakers in the United States have expanded an investigation into the use of location-tracking systems on mobile devices.

VOA: special.2011.05.02

All of the systems on the Mercury spacecraft sent radio signals to flight controllers.

VOA: special.2009.06.17

Both events can have important effects on weather systems and climates around the world.

VOA: special.2009.09.29

And Virgil Grissom,of the Air Force, worked on Mercury's electrical systems.

VOA: special.2009.06.10

These cave systems form in carbonate rock, often on islands.

VOA: special.2010.11.10

The signals,or telemetry, reported on the condition of the systems.

VOA: special.2009.06.17

The astronauts turned the systems back on.

VOA: special.2009.06.24